Wednesday, July 8, 2026

Patent intelligence · US

US 12371420

Polymorphs of Selinexor

granted A61KA61K31/497A61PA61P35/00
Status granted
Linked drugs 1
Pipeline programs 6
Years to expiry 19
Applicant portfolio 38
Patent details — US 12371420
Jurisdiction
US
Status
granted
Grant date
Jul 29, 2025
Expiration
Jul 24, 2045
Claims
14
CPC classes
A61K, A61K31/497, A61P, A61P35/00
View on Google Patents ↗

Quick answer

US 12371420 (Polymorphs of Selinexor) is held by Karyopharm Therapeutics Inc.. Status: granted. Granted Jul 29, 2025. Expires Jul 24, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Key facts

Grant date
Expiration
Claims
14
CPC classes
A61K, A61K31/497, A61P, A61P35/00

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Frequently asked questions

What is US patent 12371420?

US 12371420 (Polymorphs of Selinexor) is held by Karyopharm Therapeutics Inc.. Status: granted. Granted Jul 29, 2025. Expires Jul 24, 2045 (19 years remaining) — relevant for patent-cliff and LOE planning.

Who owns US 12371420?

Karyopharm Therapeutics Inc. is listed as the applicant in USPTO PatentsView records indexed by NovaPharmaNews. We track 38 pharmaceutical patents for this assignee.

When does US 12371420 expire?

Our index shows an expiration date of Jul 24, 2045 (19 years from today). Confirm material dates against USPTO, FDA Orange Book, or qualified counsel before contractual decisions.